Employing a unique heat dissipation system, over 80% of the heat generated by the LEDs is directed to the streetlight housing, utilizing natural air convection to dissipate heat. This simple structure offers excellent heat dissipation, weighing less than one-third of ordinary LED streetlights. The shape maintains the original streetlight structure, meeting hydrodynamic requirements and wind resistance, ensuring safe operation. Utilizing internationally advanced LED power chip technology, it eliminates traditional large capacitor filtering, guaranteeing reliable long-term operation. Advanced power chip control and circuit topology further enhance its stability.
The input power factor is improved to ≥0.95, and the total harmonic distortion (THD) content is reduced to 5%-8%, minimizing grid pollution and meeting relevant international standards for harmonics. In contrast, ordinary LED streetlights use bridge rectification and large capacitor filtering, resulting in a power factor of only around 0.6. Non-self-ballasted LED modules are selected for constant voltage, constant current, or constant power operation in conjunction with the drive control circuit. Each string of LEDs operates at 98% of its rated voltage and current. With the assistance of a reference drive controller, the LEDs operate stably at their rated voltage (current), with actual power consumption not exceeding 105% of the rated power. This ensures slow light decay and a lifespan exceeding 50,000 hours for the LED streetlights. Considering the specific environment in which these streetlights are used, this series features a surge protection design. When the mains surge voltage exceeds 300V, the power supply automatically shuts down the circuit. When the surge voltage peak drops below 300V, the power supply automatically resumes operation. This process is instantaneous, ensuring the safety of both the power supply and the light source while preventing high-voltage shutdown and potential road safety accidents caused by momentary darkness.
